Microsoft is testing adding a cool Media Transport Control to the Windows 10 Volume pop-up

Microsoft has been experimenting on and off with improvements to the Windows 10 volume flyout, and in the latest Insider Build of Windows 10 2004, it seems they are once again testing a more functional version of the feature.

Uncovered by Albacore, the feature brings media transport to the volume flyout, allowing you to control any music using Global Media Controls.